A Russian supercomputer posing as a 13-year-old boy has convinced judges that it is human, becoming the first to pass the Turing Test in a historic moment in artificial intelligence, British scientists said. The computer became the first in the world to be mistaken for a real person more than 30 percent of the time, during a series of five-minute keyboard conversations with humans conducted at the Royal Society in London. The test was established in 1950 by Alan Turing, a World War II British codebreaker and pioneer of computer science, in a journal article about whether computers think. The Russian computer programme, which simulated a 13-year-old boy named Eugene Goostman, persuaded the judges 33 percent of the time that it was a human.